This 270 Watt micro atx power supply is a perfect replacement for computers which use micro-atx power supplies. Check the dimensions of this power supply and compare them to the dimensions of your power supply. If the dimensions are close then this micro atx power supply should work as a replacement. Internal relay inside the power supply is actuated by the power switch connected to your motherboard. This power supply also has an external switch. As you can see by the connectors on this power supply it fully supports P4 and AMD CPU's.